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/*
* Copyright (c) 2021, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <arch.h>
#include <arch_helpers.h>
#include <lib/psci/psci.h>
#include <plat_helpers.h>
#include <platform_def.h>
const unsigned char mtk_power_domain_tree_desc[] = {
/* Number of root nodes */
PLATFORM_SYSTEM_COUNT,
/* Number of children for the root node */
PLATFORM_MCUSYS_COUNT,
/* Number of children for the mcusys node */
PLATFORM_CLUSTER_COUNT,
/* Number of children for the first cluster node */
PLATFORM_CLUSTER0_CORE_COUNT,
};
const unsigned char *plat_get_power_domain_tree_desc(void)
{
return mtk_power_domain_tree_desc;
}
/*******************************************************************************
* This function implements a part of the critical interface between the psci
* generic layer and the platform that allows the former to query the platform
* to convert an MPIDR to a unique linear index. An error code (-1) is returned
* in case the MPIDR is invalid.
******************************************************************************/
int plat_core_pos_by_mpidr(u_register_t mpidr)
{
unsigned int cluster_id, cpu_id;
if ((read_mpidr() & MPIDR_MT_MASK) != 0) {
/* ARMv8.2 arch */
if ((mpidr & (MPIDR_AFFLVL_MASK << MPIDR_AFF0_SHIFT)) != 0) {
return -1;
}
return plat_mediatek_calc_core_pos(mpidr);
}
mpidr &= MPIDR_AFFINITY_MASK;
if ((mpidr & ~(MPIDR_CLUSTER_MASK | MPIDR_CPU_MASK)) != 0) {
return -1;
}
cluster_id = (mpidr >> MPIDR_AFF1_SHIFT) & MPIDR_AFFLVL_MASK;
cpu_id = (mpidr >> MPIDR_AFF0_SHIFT) & MPIDR_AFFLVL_MASK;
if (cluster_id >= PLATFORM_CLUSTER_COUNT) {
return -1;
}
/*
* Validate cpu_id by checking whether it represents a CPU in
* one of the two clusters present on the platform.
*/
if (cpu_id >= PLATFORM_MAX_CPUS_PER_CLUSTER) {
return -1;
}
return (cpu_id + (cluster_id * 8));
}
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